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bpo-40883: Fix memory leak in fstring_compile_expr in parse_string.c (GH-20667)

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Pablo Galindo 2020-06-06 00:52:15 +01:00 committed by GitHub
parent b084d1b97e
commit a54096e305
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1
Misc/NEWS.d/next/Core and Builtins/2020-06-05-23-25-00.bpo-40883.M6sQ-Q.rst Normal file
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@ -0,0 +1 @@
Fix memory leak in when parsing f-strings in the new parser. Patch by Pablo Galindo

2
Parser/pegen/parse_string.c
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@ -604,6 +604,7 @@ fstring_compile_expr(Parser *p, const char *expr_start, const char *expr_end,
struct tok_state* tok = PyTokenizer_FromString(str, 1); struct tok_state* tok = PyTokenizer_FromString(str, 1);
if (tok == NULL) { if (tok == NULL) {
PyMem_RawFree(str);
return NULL; return NULL;
} }
Py_INCREF(p->tok->filename); Py_INCREF(p->tok->filename);
@ -629,6 +630,7 @@ fstring_compile_expr(Parser *p, const char *expr_start, const char *expr_end,
result = expr; result = expr;
exit: exit:
PyMem_RawFree(str);
_PyPegen_Parser_Free(p2); _PyPegen_Parser_Free(p2);
PyTokenizer_Free(tok); PyTokenizer_Free(tok);
return result; return result;